CN105330954A - Weather-proof resin master batch for agricultural plastic mulching film synthesis and preparation method - Google Patents
Weather-proof resin master batch for agricultural plastic mulching film synthesis and preparation method Download PDFInfo
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- A01G13/00—Protecting plants
- A01G13/02—Protective coverings for plants; Coverings for the ground; Devices for laying-out or removing coverings
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Abstract
The invention relates to the field of mulching film materials, and discloses a weather-proof resin master batch for agricultural plastic mulching film synthesis and a preparation method thereof. The weather-proof resin master batch is prepared from 45-65 parts of linear low density polyethylene powder, 15-25 parts of low density polyethylene powder, 4-8 parts of high density polyethylene powder, 1-2 parts of an antioxidant, 0.5-1 part of a light stabilizer, 0.5-1 part of an ultraviolet light absorber, 4-6 parts of acrylic acid, 4-8 parts of a sodium hydroxide water solution, 0.5-1.5 parts of sea-foam stone powder, 0.5-1.5 parts of konjac glucomannan, 0.02-0.04 part of potassium persulfate, 0.04-0.06 part of aluminum chloride, 0.01-0.03 part of N,N' methylene-bisacrylamide, 0.1-0.3 part of sodium bicarbonate, 0.5-1.5 parts of sodium carboxymethyl cellulose and 1-2 parts of polyethylene wax. The weather-proof resin master batch has the good light resistance and heat resistance and excellent tensile property, and is capable of being repeatedly recycled and long in service life.
Description
Technical field
The present invention relates to film material field, particularly relate to a kind of agricultural mulching synthesis weather-proof resin concentrates and preparation method thereof.
Background technology
China is traditional large agricultural country, has huge demand every year for agricultural mulching.But current most mulch film weathering resistance is poor, after standing to expose to the weather for a long time, drenching with rain, easily aging, break.
Application number be 201510186686.2 Chinese invention patent disclose a kind of plastic film of good weatherability properties, it is made up of the raw material of following parts by weight: EPDM2-8 part, white oil 5-9 part, polyvinyl chloride 7-10 part, carboxymethyl aliphatic amide 1-5 part, vinyl acetate between to for plastic 4-11 part, this 9-14 part of stearic acid, nanometer Cr-W alloy powder 1-4 part, aluminum-based layered nanometer material 4-9 part, chromic oxide 1-3 part, potassium titanate crystal whisker 2-6 part, methacrylic ester 7-10 part, organotin 1-3 part, coupling agent 2-3 part.The plastic film of this invention, has good weathering resistance, and intensity is better, not easily tears phenomenon, pollutes little simultaneously.
But the one side cost of the mulch film of foregoing invention is higher, and cannot reclaim second stage employ.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of agricultural mulching synthesis weather-proof resin concentrates and preparation method thereof.The weather-proof resin concentrates of agricultural mulching of the present invention synthesis has fast light, resistance toheat and outstanding tensile property preferably.Repeatedly can reclaim use, long service life.
Concrete technical scheme of the present invention is: weather-proof resin concentrates is used in a kind of agricultural mulching synthesis, formula is the material of following weight part: 45-65 part LLDPE powder, 15-25 part Low Density Polyethylene powder, 4-8 part high density polyethylene(HDPE) powder, 1-2 part oxidation inhibitor, 0.5-1 part photostabilizer, 0.5-1 part UV light absorber, 4-6 part vinylformic acid, 4-8 part aqueous sodium hydroxide solution, 0.5-1.5 part sepiolite powder, 0.5-1.5 part Rhizoma amorphophalli glucomannan, 0.02-0.04 part Potassium Persulphate, 0.04-0.06 part aluminum chloride, 0.01-0.03 part N, N ' methylene-bisacrylamide, 0.1-0.3 part sodium bicarbonate, 0.5-1.5 part Xylo-Mucine, 1-2 part polyethylene wax.
In the formula that the technical program agricultural mulching synthesizes with weather-proof resin concentrates, with LLDPE powder, Low Density Polyethylene powder and high density polyethylene(HDPE) powder are as matrix, the wherein polyethylene powder collocation of different densities and structure, masterbatch can be made to have ideal softening temperature, melt temperature, after being prepared into mulch film, make mulch film have good tensile strength, toughness and weathering resistance simultaneously.Oxidation inhibitor, photostabilizer, UV light absorber can improve the anti ageing property of mulch film, photostabilization and thermotolerance.By vinylformic acid and sepiolite powder, Rhizoma amorphophalli glucomannan, Xylo-Mucine together compound, there is after making this composite material forming moisture adsorption and releasing ability strongly, and absorbent capacity is large, the deionized water of self hundreds of times of weight and the saliferous moisture of decades of times weight can be absorbed rapidly, automatically can also carry out moisture adsorption and releasing according to the psychrometric difference of own material and environment.
As the technical program further preferably, described oxidation inhibitor is 2, one or more in 6-tri-grades of butyl-4-methylphenols, two (3,5-, tri-grades of butyl-4-hydroxy phenyls) thioether, two Lauryl Alcohol ester, two ten four carbon alcohols esters, two octadecanol ester.
As the technical program further preferably, described photostabilizer is one or more in 4-benzoyloxy-2,2,6,6-tetramethyl piperidine, HMPA, 2,4,6-tri-(2 ' n-butoxyphenyl)-1,3,5-triazines.
As the technical program further preferably, described UV light absorber is one or more in salicylic acid phenyl ester, 2,4 dihydroxyl benzophenone, ESCALOL 567.
As the technical program further preferably, the concentration of described aqueous sodium hydroxide solution is 5-10wt%.Aqueous sodium hydroxide solution has following effect in formula: one is react as raw material and vinylformic acid when preparing sodium polyacrylate; Two is the neutralization reagents as reaction system, makes reaction product be neutral; Three is that to be prepared into sodium polyacrylate be after the matrix material of main body, as the solvent of sodium polyacrylate, increases the fused degree of sodium polyacrylate and other raw materials.
As the technical program further preferably, described agricultural mulching synthesis is with also comprising 0.5-1.5 part attapulgite and 0.5-1.5 part oleic acid in the formula of weather-proof resin concentrates.
In formula, by oleic acid load on attapulgite, stability is strong; In addition, attapulgite can strengthen ground film strength, and oleic acid can increase the oxygen level of water body after water-soluble, after resin concentrates of the present invention is prepared into mulch film, after mulch film absorbs large quantity of moisture, oleic acid moiety is dissolved, and in moisture, oxygen level increases, mulch film is while soil permeability moisture, provide certain oxygen also to the farm crop root system in soil, be conducive to respiration, promote root growth, solve due to membrane covering, the problem of mulch film lower surface anoxic.
Present invention also offers the preparation method of the weather-proof resin concentrates of a kind of agricultural mulching synthesis, carry out according to the following steps:
A, take each material in described formula by proportioning, vinylformic acid, sepiolite powder, Rhizoma amorphophalli glucomannan, Potassium Persulphate, Xylo-Mucine are added in the reaction vessel that aqueous sodium hydroxide solution is housed mix and at 60-70 DEG C stirring reaction 15-25min.Step a obtains the mixing material based on sodium polyacrylate.
Aluminum chloride and N is added in b, first backward described reaction vessel, N ' methylene-bisacrylamide, continue stirring reaction at 50-60 DEG C, until add sodium bicarbonate when reaction product is gel in reaction vessel, continue stirring reaction 0.5-1h, then reaction product is taken out and dry to solid content be 90-95wt%.After adding sodium bicarbonate, sodium bicarbonate decomposes process gas, thus in gel resin, generate a large amount of miniature holes, significantly can improve water absorption capacity, the obtained gel matrix material based on sodium polyacrylate after step b.
C, by the reaction product of step b, LLDPE powder, Low Density Polyethylene powder, high density polyethylene(HDPE) powder, oxidation inhibitor, photostabilizer, UV light absorber and polyethylene wax together carry out spice, then to add in plastic granulator successively through plastify, filtering, extrude, wire drawing, cooling, cutting, namely obtain finished product after oven dry; Wherein described in extrusion, the temperature of plastic granulating machine controls at 130-280 DEG C.
The invention provides the preparation method of the weather-proof resin concentrates of another kind of agricultural mulching synthesis, carry out according to the following steps:
A, take each material in described formula by proportioning, vinylformic acid, sepiolite powder, Rhizoma amorphophalli glucomannan, Potassium Persulphate, Xylo-Mucine are added in the reaction vessel that aqueous sodium hydroxide solution is housed mix and at 60-70 DEG C stirring reaction 15-25min.
Aluminum chloride and N is added in b, first backward described reaction vessel, N ' methylene-bisacrylamide, continue stirring reaction at 50-60 DEG C, until add sodium bicarbonate when reaction product is gel in reaction vessel, continue stirring reaction 0.5-1h, then reaction product is taken out and dry to solid content be 90-95wt%.
C, by attapulgite thermal activation 3-5h at 500 DEG C, then the attapulgite after thermal activation being added to concentration is at 50-60 DEG C, carry out stirring 40-60min in the silane coupling agent ethanolic soln of 50wt%, then after filtering, attapulgite is dried, obtain attapulgite modified, by attapulgite modified with oleic acid mix and blend, obtained load has the attapulgite of oleic acid.
D, by the reaction product of step b, load has the attapulgite of oleic acid, LLDPE powder, Low Density Polyethylene powder, high density polyethylene(HDPE) powder, oxidation inhibitor, photostabilizer, UV light absorber and polyethylene wax together carry out spice, then to add in plastic granulator successively through plastify, filtering, extrude, wire drawing, cooling, cutting, namely obtain finished product after oven dry; Wherein described in extrusion, the temperature of plastic granulating machine controls at 130-280 DEG C.
Be compared with the prior art, the invention has the beneficial effects as follows: the weather-proof resin concentrates of agricultural mulching of the present invention synthesis has fast light, resistance toheat and outstanding tensile property preferably.Repeatedly can reclaim use.
In addition, with the mulch film that water conservation masterbatch of the present invention is produced, can the saliferous moisture of the deionized water decades of times of specific absorption self tuple hundred times rapidly, create can absorb fast, store, " the little reservoir " of slow releasing moisture and nutrient, effectively can reduce the deep percolation of irrigation water (rainwater) and fertilizer, improve water and fertilizer utilization, strengthen the water-retentivity of soil, the evaporation of soil moisture control, to meet the growth needs of plant; It can also improve Soil structure, increases soil activation, reduces soil plate and promote plant root growth growth etc.
Embodiment
Below in conjunction with embodiment, the invention will be further described.LLDPE powder described in following examples, Low Density Polyethylene powder, high density polyethylene(HDPE) powder is commercial product, wherein LLDPE powder, the relative density of Low Density Polyethylene powder is between 0.910-0.925, and the relative density of high density polyethylene(HDPE) powder is between 0.941-0.965.
Embodiment 1
Weather-proof resin concentrates is used in a kind of agricultural mulching synthesis, formula is the material of following weight part: 55 parts of LLDPE powders, 20 parts of Low Density Polyethylene powders, 6 parts of high density polyethylene(HDPE) powders, 1 part 2, 6-tri-grades of butyl-4-methylphenols, 0.5 part of two Lauryl Alcohol ester, 0.5 part of 4-benzoyloxy-2, 2, 6, 6-tetramethyl piperidine, 0.5 part of HMPA, 0.5 part of salicylic acid phenyl ester, 0.5 part 2, 4-dihydroxy benaophenonel, 5 parts of vinylformic acid, 6 parts of concentration are the aqueous sodium hydroxide solution of 7.5wt%, 1 part of sepiolite powder, 1 part of Rhizoma amorphophalli glucomannan, 0.03 part of Potassium Persulphate, 0.05 part of aluminum chloride, 0.02 part of N, N ' methylene-bisacrylamide, 0.2 part of sodium bicarbonate, 1 part of Xylo-Mucine, 1.5 parts of polyethylene waxs.
An agricultural mulching synthesis preparation method for weather-proof resin concentrates, carries out according to the following steps:
A, take each material in described formula by proportioning, vinylformic acid, sepiolite powder, Rhizoma amorphophalli glucomannan, Potassium Persulphate, Xylo-Mucine are added in the reaction vessel that aqueous sodium hydroxide solution is housed mix and at 65 DEG C stirring reaction 20min.
Aluminum chloride and N is added in b, first backward described reaction vessel, N ' methylene-bisacrylamide, continue stirring reaction at 55 DEG C, until add sodium bicarbonate when reaction product is gel in reaction vessel, continue stirring reaction 0.75h, then reaction product is taken out and dry to solid content be 90-95wt%.
C, by the reaction product of step b, LLDPE powder, Low Density Polyethylene powder, high density polyethylene(HDPE) powder, oxidation inhibitor, photostabilizer, UV light absorber and polyethylene wax together carry out spice, then to add in plastic granulator successively through plastify, filtering, extrude, wire drawing, cooling, cutting, namely obtain finished product after oven dry; Wherein described in extrusion, the temperature of plastic granulating machine controls at 220 DEG C.
The mulch film prepared of the weather-proof resin concentrates of the present embodiment using the physical and mechanical properties of different time and retention tests result is:
Use after 4 months,
Tensile loading (vertical/horizontal) test value of mulch film is respectively 29N/30N;
Tensile loading (vertical/horizontal) retention rate of mulch film is respectively 92%/93%;
Elongation at break (vertical/horizontal) test value of mulch film is respectively 425%/455%;
Elongation at break (vertical/horizontal) retention rate of mulch film is respectively 91%/92%;
Right-angle tearing load (vertical/horizontal) test value of mulch film is respectively 1.1N/1.3N;
Right-angle tearing load (vertical/horizontal) retention rate of mulch film is respectively 94%/95%.
Use after 8 months,
Tensile loading (vertical/horizontal) test value of mulch film is respectively 18N/20N;
Tensile loading (vertical/horizontal) retention rate of mulch film is respectively 79%/84%;
Elongation at break (vertical/horizontal) test value of mulch film is respectively 370%/380%;
Elongation at break (vertical/horizontal) retention rate of mulch film is respectively 81%/83%;
Right-angle tearing load (vertical/horizontal) test value of mulch film is respectively 0.92N/1.01N;
Right-angle tearing load (vertical/horizontal) retention rate of mulch film is respectively 89%/87%.
Use after 12 months,
Tensile loading (vertical/horizontal) test value of mulch film is respectively 14N/16N;
Tensile loading (vertical/horizontal) retention rate of mulch film is respectively 65%/68%;
Elongation at break (vertical/horizontal) test value of mulch film is respectively 305%/295%;
Elongation at break (vertical/horizontal) retention rate of mulch film is respectively 67%/72%;
Right-angle tearing load (vertical/horizontal) test value of mulch film is respectively 0.74N/0.69N;
Right-angle tearing load (vertical/horizontal) retention rate of mulch film is respectively 68%/70%.
Embodiment 2
Weather-proof resin concentrates is used in a kind of agricultural mulching synthesis, formula is the material of following weight part: 65 parts of LLDPE powders, 15 parts of Low Density Polyethylene powders, 4 parts of high density polyethylene(HDPE) powders, 1 part two (3, 5-tri-grades of butyl-4-hydroxy phenyls) thioether, 0.5 part of two octadecanol ester, 0.5 part 2, 4, 6-tri-(2 ' n-butoxyphenyl)-1, 3, 5-triazine, 0.5 part of salicylic acid phenyl ester, 4 parts of vinylformic acid, 4 parts of concentration are the aqueous sodium hydroxide solution of 10wt%, 0.5 part of sepiolite powder, 0.5 part of Rhizoma amorphophalli glucomannan, 0.02 part of Potassium Persulphate, 0.04 part of aluminum chloride, 0.01 part of N, N ' methylene-bisacrylamide, 0.1 part of sodium bicarbonate, 0.5 part of Xylo-Mucine, 1 part of polyethylene wax, 0.5 part of attapulgite and 0.5 part of oleic acid.
An agricultural mulching synthesis preparation method for weather-proof resin concentrates, carries out according to the following steps:
A, take each material in described formula by proportioning, vinylformic acid, sepiolite powder, Rhizoma amorphophalli glucomannan, Potassium Persulphate, Xylo-Mucine are added in the reaction vessel that aqueous sodium hydroxide solution is housed mix and at 60 DEG C stirring reaction 25min.
Aluminum chloride and N is added in b, first backward described reaction vessel, N ' methylene-bisacrylamide, continue stirring reaction at 50 DEG C, until add sodium bicarbonate when reaction product is gel in reaction vessel, continue stirring reaction 1h, then reaction product is taken out and dry to solid content be 90-95wt%.
C, by attapulgite thermal activation 3h at 500 DEG C, then the attapulgite after thermal activation being added to concentration is at 50 DEG C, carry out stirring 60min in the silane coupling agent ethanolic soln of 50wt%, then after filtering, attapulgite is dried, obtain attapulgite modified, by attapulgite modified with oleic acid mix and blend, obtained load has the attapulgite of oleic acid.
D, by the reaction product of step b, load has the attapulgite of oleic acid, LLDPE powder, Low Density Polyethylene powder, high density polyethylene(HDPE) powder, oxidation inhibitor, photostabilizer, UV light absorber and polyethylene wax together carry out spice, then to add in plastic granulator successively through plastify, filtering, extrude, wire drawing, cooling, cutting, namely obtain finished product after oven dry; Wherein described in extrusion, the temperature of plastic granulating machine controls at 130 DEG C.
The mulch film prepared of the weather-proof resin concentrates of the present embodiment using the physical and mechanical properties of different time and retention tests result is:
Use after 4 months,
Tensile loading (vertical/horizontal) test value of mulch film is respectively 28N/30N;
Tensile loading (vertical/horizontal) retention rate of mulch film is respectively 91%/93%;
Elongation at break (vertical/horizontal) test value of mulch film is respectively 428%/463%;
Elongation at break (vertical/horizontal) retention rate of mulch film is respectively 91%/92%;
Right-angle tearing load (vertical/horizontal) test value of mulch film is respectively 1.05N/1.27N;
Right-angle tearing load (vertical/horizontal) retention rate of mulch film is respectively 95%/95%.
Use after 8 months,
Tensile loading (vertical/horizontal) test value of mulch film is respectively 17N/19N;
Tensile loading (vertical/horizontal) retention rate of mulch film is respectively 78%/83%;
Elongation at break (vertical/horizontal) test value of mulch film is respectively 366%/378%;
Elongation at break (vertical/horizontal) retention rate of mulch film is respectively 80%/82%;
Right-angle tearing load (vertical/horizontal) test value of mulch film is respectively 0.90N/1.00N;
Right-angle tearing load (vertical/horizontal) retention rate of mulch film is respectively 88%/87%.
Use after 12 months,
Tensile loading (vertical/horizontal) test value of mulch film is respectively 14N/16N;
Tensile loading (vertical/horizontal) retention rate of mulch film is respectively 65%/68%;
Elongation at break (vertical/horizontal) test value of mulch film is respectively 310%/295%;
Elongation at break (vertical/horizontal) retention rate of mulch film is respectively 68%/72%;
Right-angle tearing load (vertical/horizontal) test value of mulch film is respectively 0.72N/0.68N;
Right-angle tearing load (vertical/horizontal) retention rate of mulch film is respectively 68%/70%.
Embodiment 3
Weather-proof resin concentrates is used in a kind of agricultural mulching synthesis, formula is the material of following weight part: 45 parts of LLDPE powders, 25 parts of Low Density Polyethylene powders, 8 parts of high density polyethylene(HDPE) powders, 1 part two (3, 5-tri-grades of butyl-4-hydroxy phenyls) thioether, 0.5 part of two Lauryl Alcohol ester, 0.5 part of two octadecanol ester, 0.5 part of HMPA, 0.5 part 2, 4, 6-tri-(2 ' n-butoxyphenyl)-1, 3, 5-triazine, 0.5 part 2, 4-dihydroxy benaophenonel, 0.5 part of ESCALOL 567, 6 parts of vinylformic acid, 8 parts of concentration are the aqueous sodium hydroxide solution of 5wt%, 1.5 parts of sepiolite powders, 1.5 parts of Rhizoma amorphophalli glucomannans, 0.04 part of Potassium Persulphate, 0.06 part of aluminum chloride, 0.03 part of N, N ' methylene-bisacrylamide, 0.3 part of sodium bicarbonate, 1.5 parts of Xylo-Mucines, 2 parts of polyethylene waxs, 1.5 parts of attapulgites and 1.5 parts of oleic acid.
An agricultural mulching synthesis preparation method for weather-proof resin concentrates, carries out according to the following steps:
A, take each material in described formula by proportioning, vinylformic acid, sepiolite powder, Rhizoma amorphophalli glucomannan, Potassium Persulphate, Xylo-Mucine are added in the reaction vessel that aqueous sodium hydroxide solution is housed mix and at 70 DEG C stirring reaction 15min.
Aluminum chloride and N is added in b, first backward described reaction vessel, N ' methylene-bisacrylamide, continue stirring reaction at 60 DEG C, until add sodium bicarbonate when reaction product is gel in reaction vessel, continue stirring reaction 0.5h, then reaction product is taken out and dry to solid content be 90-95wt%.
C, by attapulgite thermal activation 5h at 500 DEG C, then the attapulgite after thermal activation being added to concentration is at 60 DEG C, carry out stirring 40min in the silane coupling agent ethanolic soln of 50wt%, then after filtering, attapulgite is dried, obtain attapulgite modified, by attapulgite modified with oleic acid mix and blend, obtained load has the attapulgite of oleic acid.
D, by the reaction product of step b, load has the attapulgite of oleic acid, LLDPE powder, Low Density Polyethylene powder, high density polyethylene(HDPE) powder, oxidation inhibitor, photostabilizer, UV light absorber and polyethylene wax together carry out spice, then to add in plastic granulator successively through plastify, filtering, extrude, wire drawing, cooling, cutting, namely obtain finished product after oven dry; Wherein described in extrusion, the temperature of plastic granulating machine controls at 280 DEG C.
The mulch film prepared of the weather-proof resin concentrates of the present embodiment using the physical and mechanical properties of different time and retention tests result is:
Use after 4 months,
Tensile loading (vertical/horizontal) test value of mulch film is respectively 27N/29N;
Tensile loading (vertical/horizontal) retention rate of mulch film is respectively 91%/92%;
Elongation at break (vertical/horizontal) test value of mulch film is respectively 405%/445%;
Elongation at break (vertical/horizontal) retention rate of mulch film is respectively 90%/91%;
Right-angle tearing load (vertical/horizontal) test value of mulch film is respectively 1.0N/1.2N;
Right-angle tearing load (vertical/horizontal) retention rate of mulch film is respectively 93%/94%.
Use after 8 months,
Tensile loading (vertical/horizontal) test value of mulch film is respectively 17N/18N;
Tensile loading (vertical/horizontal) retention rate of mulch film is respectively 78%/83%;
Elongation at break (vertical/horizontal) test value of mulch film is respectively 362%/375%;
Elongation at break (vertical/horizontal) retention rate of mulch film is respectively 80%/82%;
Right-angle tearing load (vertical/horizontal) test value of mulch film is respectively 0.90N/0.98N;
Right-angle tearing load (vertical/horizontal) retention rate of mulch film is respectively 88%/86%.
Use after 12 months,
Tensile loading (vertical/horizontal) test value of mulch film is respectively 14N/15N;
Tensile loading (vertical/horizontal) retention rate of mulch film is respectively 65%/67%;
Elongation at break (vertical/horizontal) test value of mulch film is respectively 303%/292%;
Elongation at break (vertical/horizontal) retention rate of mulch film is respectively 67%/72%;
Right-angle tearing load (vertical/horizontal) test value of mulch film is respectively 0.70N/0.67N;
Right-angle tearing load (vertical/horizontal) retention rate of mulch film is respectively 67%/69%.
Embodiment 4
Weather-proof resin concentrates is used in a kind of agricultural mulching synthesis, formula is the material of following weight part: 50 parts of LLDPE powders, 25 parts of Low Density Polyethylene powders, 5 parts of high density polyethylene(HDPE) powders, 1 part 2, 6-tri-grades of butyl-4-methylphenols, two (3, 5-tri-grades of butyl-4-hydroxy phenyls) thioether, 1 part of HMPA, 1 part of ESCALOL 567, 5 parts of vinylformic acid, 5 parts of concentration are the aqueous sodium hydroxide solution of 6wt%, 0.5 part of sepiolite powder, 0.5 part of Rhizoma amorphophalli glucomannan, 0.02 part of Potassium Persulphate, 0.04 part of aluminum chloride, 0.01 part of N, N ' methylene-bisacrylamide, 0.1 part of sodium bicarbonate, 0.5 part of Xylo-Mucine, 1 part of polyethylene wax, 1 part of attapulgite and 1 part of oleic acid.
An agricultural mulching synthesis preparation method for weather-proof resin concentrates, carries out according to the following steps:
A, take each material in described formula by proportioning, vinylformic acid, sepiolite powder, Rhizoma amorphophalli glucomannan, Potassium Persulphate, Xylo-Mucine are added in the reaction vessel that aqueous sodium hydroxide solution is housed mix and at 70 DEG C stirring reaction 25min.
Aluminum chloride and N is added in b, first backward described reaction vessel, N ' methylene-bisacrylamide, continue stirring reaction at 60 DEG C, until add sodium bicarbonate when reaction product is gel in reaction vessel, continue stirring reaction 1h, then reaction product is taken out and dry to solid content be 90-95wt%.
C, by attapulgite thermal activation 5h at 500 DEG C, then the attapulgite after thermal activation being added to concentration is at 60 DEG C, carry out stirring 60min in the silane coupling agent ethanolic soln of 50wt%, then after filtering, attapulgite is dried, obtain attapulgite modified, by attapulgite modified with oleic acid mix and blend, obtained load has the attapulgite of oleic acid.
D, by the reaction product of step b, load has the attapulgite of oleic acid, LLDPE powder, Low Density Polyethylene powder, high density polyethylene(HDPE) powder, oxidation inhibitor, photostabilizer, UV light absorber and polyethylene wax together carry out spice, then to add in plastic granulator successively through plastify, filtering, extrude, wire drawing, cooling, cutting, namely obtain finished product after oven dry; Wherein described in extrusion, the temperature of plastic granulating machine controls at 250 DEG C.
Use after 4 months,
Tensile loading (vertical/horizontal) test value of mulch film is respectively 28N/29N;
Tensile loading (vertical/horizontal) retention rate of mulch film is respectively 91%/92%;
Elongation at break (vertical/horizontal) test value of mulch film is respectively 408%/447%;
Elongation at break (vertical/horizontal) retention rate of mulch film is respectively 90%/91%;
Right-angle tearing load (vertical/horizontal) test value of mulch film is respectively 1.02N/1.18N;
Right-angle tearing load (vertical/horizontal) retention rate of mulch film is respectively 93%/94%.
Use after 8 months,
Tensile loading (vertical/horizontal) test value of mulch film is respectively 17N/19N;
Tensile loading (vertical/horizontal) retention rate of mulch film is respectively 78%/84%;
Elongation at break (vertical/horizontal) test value of mulch film is respectively 365%/374%;
Elongation at break (vertical/horizontal) retention rate of mulch film is respectively 80%/82%;
Right-angle tearing load (vertical/horizontal) test value of mulch film is respectively 0.89N/0.97N;
Right-angle tearing load (vertical/horizontal) retention rate of mulch film is respectively 88%/86%.
Use after 12 months,
Tensile loading (vertical/horizontal) test value of mulch film is respectively 14N/16N;
Tensile loading (vertical/horizontal) retention rate of mulch film is respectively 65%/68%;
Elongation at break (vertical/horizontal) test value of mulch film is respectively 307%/292%;
Elongation at break (vertical/horizontal) retention rate of mulch film is respectively 68%/72%;
Right-angle tearing load (vertical/horizontal) test value of mulch film is respectively 0.70N/0.67N;
Right-angle tearing load (vertical/horizontal) retention rate of mulch film is respectively 67%/69%.Raw materials used in the present invention, equipment, unless otherwise noted, is conventional raw material, the equipment of this area; Method therefor in the present invention, unless otherwise noted, is the ordinary method of this area.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every above embodiment is done according to the technology of the present invention essence any simple modification, change and equivalent transformation, all still belong to the protection domain of technical solution of the present invention.
Claims (8)
1. weather-proof resin concentrates is used in an agricultural mulching synthesis, it is characterized in that the material of filling a prescription as following weight part: 45-65 part LLDPE powder, 15-25 part Low Density Polyethylene powder, 4-8 part high density polyethylene(HDPE) powder, 1-2 part oxidation inhibitor, 0.5-1 part photostabilizer, 0.5-1 part UV light absorber, 4-6 part vinylformic acid, 4-8 part aqueous sodium hydroxide solution, 0.5-1.5 part sepiolite powder, 0.5-1.5 part Rhizoma amorphophalli glucomannan, 0.02-0.04 part Potassium Persulphate, 0.04-0.06 part aluminum chloride, 0.01-0.03 part N, N ' methylene-bisacrylamide, 0.1-0.3 part sodium bicarbonate, 0.5-1.5 part Xylo-Mucine, 1-2 part polyethylene wax.
2. weather-proof resin concentrates is used in agricultural mulching synthesis as claimed in claim 1, it is characterized in that, described oxidation inhibitor is 2, one or more in 6-tri-grades of butyl-4-methylphenols, two (3,5-, tri-grades of butyl-4-hydroxy phenyls) thioether, two Lauryl Alcohol ester, two ten four carbon alcohols esters, two octadecanol ester.
3. weather-proof resin concentrates is used in agricultural mulching synthesis as claimed in claim 1, it is characterized in that, described photostabilizer is 4-benzoyloxy-2,2,6,6-tetramethyl piperidine, HMPA, 2,4, one or more in 6-tri-(2 ' n-butoxyphenyl)-1,3,5-triazines.
4. weather-proof resin concentrates is used in agricultural mulching synthesis as claimed in claim 1, it is characterized in that, described UV light absorber is one or more in salicylic acid phenyl ester, 2,4 dihydroxyl benzophenone, ESCALOL 567.
5. weather-proof resin concentrates is used in agricultural mulching synthesis as claimed in claim 1, and it is characterized in that, the concentration of described aqueous sodium hydroxide solution is 5-10wt%.
6. a weather-proof resin concentrates is used in the agricultural mulching synthesis as described in one of claim 1-5, it is characterized in that, described agricultural mulching synthesis is with also comprising 0.5-1.5 part attapulgite and 0.5-1.5 part oleic acid in the formula of weather-proof resin concentrates.
7. the agricultural mulching synthesis preparation method for weather-proof resin concentrates as described in one of claim 1-5, is characterized in that carrying out according to the following steps:
A, take each material in described formula by proportioning, vinylformic acid, sepiolite powder, Rhizoma amorphophalli glucomannan, Potassium Persulphate, Xylo-Mucine are added in the reaction vessel that aqueous sodium hydroxide solution is housed mix and at 60-70 DEG C stirring reaction 15-25min;
Aluminum chloride and N is added in b, first backward described reaction vessel, N ' methylene-bisacrylamide, continue stirring reaction at 50-60 DEG C, until add sodium bicarbonate when reaction product is gel in reaction vessel, continue stirring reaction 0.5-1h, then reaction product is taken out and dry to solid content be 90-95wt%;
C, by the reaction product of step b, LLDPE powder, Low Density Polyethylene powder, high density polyethylene(HDPE) powder, oxidation inhibitor, photostabilizer, UV light absorber and polyethylene wax together carry out spice, then to add in plastic granulator successively through plastify, filtering, extrude, wire drawing, cooling, cutting, namely obtain finished product after oven dry; Wherein described in extrusion, the temperature of plastic granulating machine controls at 130-280 DEG C.
8. an agricultural mulching synthesis preparation method for weather-proof resin concentrates as claimed in claim 6, is characterized in that carrying out according to the following steps:
A, take each material in described formula by proportioning, vinylformic acid, sepiolite powder, Rhizoma amorphophalli glucomannan, Potassium Persulphate, Xylo-Mucine are added in the reaction vessel that aqueous sodium hydroxide solution is housed mix and at 60-70 DEG C stirring reaction 15-25min;
Aluminum chloride and N is added in b, first backward described reaction vessel, N ' methylene-bisacrylamide, continue stirring reaction at 50-60 DEG C, until add sodium bicarbonate when reaction product is gel in reaction vessel, continue stirring reaction 0.5-1h, then reaction product is taken out and dry to solid content be 90-95wt%;
C, by attapulgite thermal activation 3-5h at 500 DEG C, then the attapulgite after thermal activation being added to concentration is at 50-60 DEG C, carry out stirring 40-60min in the silane coupling agent ethanolic soln of 50wt%, then after filtering, attapulgite is dried, obtain attapulgite modified, by attapulgite modified with oleic acid mix and blend, obtained load has the attapulgite of oleic acid;
D, by the reaction product of step b, load has the attapulgite of oleic acid, LLDPE powder, Low Density Polyethylene powder, high density polyethylene(HDPE) powder, oxidation inhibitor, photostabilizer, UV light absorber and polyethylene wax together carry out spice, then to add in plastic granulator successively through plastify, filtering, extrude, wire drawing, cooling, cutting, namely obtain finished product after oven dry; Wherein described in extrusion, the temperature of plastic granulating machine controls at 130-280 DEG C.
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